Howdy, Just got back from a trip to beautiful Bellingham Wa. As of now, I've set a new personal fuel economy record: 40.76 MPG. My previous best was 39.86 whilst using Amsoil 0W30. I'll mention that I've tried to beat this record on several occasions but couldn't until now with Redline. I'm not going to go as far as saying that Redline increases fuel econ, but I thought the board would like to know.